Optimise memory allocation in set_webrender_image_key

servo · Nov 16, 2018 · da43e35 · da43e35
1 parent a5779ad
commit da43e35
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/components/net/image_cache.rs b/components/net/image_cache.rs
@@ -59,6 +59,7 @@ fn set_webrender_image_key(webrender_api: &webrender_api::RenderApi, image: &mut
             pixels::rgba8_premultiply_inplace(bytes.as_mut_slice())
         },
         PixelFormat::RGB8 => {
+            bytes.reserve(image.bytes.len() / 3 * 4);
             for bgr in image.bytes.chunks(3) {
                 bytes.extend_from_slice(&[bgr[2], bgr[1], bgr[0], 0xff]);
             }